<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel {

	public $email;
	public $password;
	public $rememberMe;
	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that email and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules () {
		return array(
			// email and password are required
			array('email, password', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels () {
		return array(
			'rememberMe' => 'Remember me next time',
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate ($attribute, $params) {
		if (!$this->hasErrors()) {
			$this->_identity = new UserIdentity($this->email, $this->password);
			if (!$this->_identity->authenticate())
				$this->addError('password', 'Incorrect email or password.');
		}
	}

	/**
	 * Logs in the user using the given email and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login () {
		if ($this->_identity === null) {
			$this->_identity = new UserIdentity($this->email, $this->password);
			$this->_identity->authenticate();
		}
		if ($this->_identity->errorCode === UserIdentity::ERROR_NONE) {
			$duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days
			Yii::app()->user->login($this->_identity, $duration);
			return true;
		}
		else
			return false;
	}

}
